Find all real solutions to the system of equations using the substitution method.y = -x2 + 3x2 + y2 = 5
A. (1, 2), (-1, 2)
B. (2, -1), (-2, -1)
C. (1, 4), (4, 19)
D. (2, -1), (1, 2), (-1, 2), (-2, -1)
Answer: D
Mathematics
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Solve the problem.A figure skater must trace a figure eight on the ice that consists of two perfect circles, each with a radius of 10 ft. How far does the skater go in tracing the figure eight?(Use 3.14 for ? .)
A. 125.6 ft B. 62.8 ft C. 29.4 ft D. 31.4 ft
Mathematics
Express the product as a sum containing only sines or cosines.sin(9?) cos(5?)
A. 
[cos(14?) - cos(4?)]
B. sin cos(45?2)
C. 
[sin(14?) + cos(4?)]
D. 
[sin(14?) + sin(4?)]
Mathematics
Identify the equation without completing the square.3x2 - 3y2 + 5x + 2y + 2 = 0
A. parabola B. hyperbola C. ellipse D. not a conic
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics